1.5 Mass conservation performance

1.5.1 Simulation class: DO

This is the simplest simulation class and it has oxygen as the only mandatory model class. For illustrative purposes, the optional pathogens model class has also been included in this mass balance simulation. The computed variables presented are therefore:

• Dissolved oxygen
• Pathogen 1 (which includes attachment dynamics)
• Pathogen 2 (which excludes attachment dynamics)

The initial conditions are:

• Dissolved oxygen: 8.0 mg/L
• Pathogen 1 alive, attached and dead: 1e6 CFU/100mL, 1e5 CFU/100mL, 1e5 CFU/100mL
• Pathogen 2 alive and dead: 1e5 CFU/100mL, 1e4 CFU/100mL

The relevant fluxes considered are (coloured as sources or sinks):

• Dissolved oxygen
  • Sediment
  • Atmospheric (both source and sink)
• Pathogen 1
  • Natural mortality
  • Inactivation due to irradiance
  • Attachment and detachment
  • Settling
• Pathogen 2
  • Natural mortality
  • Inactivation due to irradiance
  • Settling

The mass conservation performance of the WQ Module for dissolved oxygen and summed pathogens (i.e. pathogen 1 and pathogen 2 combined) is presented in Figure 1.2, via \(DO_{mb}\), \(PTHa_{mb}\) and \(PTHd_{mb}\). Over the duration of the simulation, mass conservation holds to within 0.02%. It is noted that the alive pathogens mass balance (\(PTHa_{mb}\)) is truncated at 2 weeks because alive concentrations are six orders of magnitude lower that initial conditions by this time, and this pushes mass balance percentage error calculations to approach a divide by zero. Dead pathogen mass conservation is less affected because overall changes are approximately one order of magnitude only. Relevant fluxes used to compute this mass conservation, as well as total pathogen mass conservation, are presented subsequently.

Figure 1.2: Dissolved oxygen mass conservation parameters \(DO_{mb}(t)\), \(PTHa_{mb}(t)\) and \(PTHd_{mb}(t)\)

Figure 1.3: Dissolved oxygen WQ Module fluxes \(F_i(t)\) used to compute \(DO_{mp}(t)\)

The following are pathogen fluxes. Because fluxes vary by several orders of magnitude, they are presented as logarithms, as -log\(_{10}\)(-flux). For example, a plotted value of -15 below, means that the actual flux was -1e15 CFU/15 minutes (not 1e-15 CFU/15 minutes), and a change in value from -16 to -15 represents a tenfold decrease in flux.

Figure 1.4: Pathogen WQ Module fluxes \(F_i(t)\) used to compute \(PTHa_{mp}(t)\) and \(PTHd_{mp}(t)\)

Figure 1.5: Total pathogen mass conservation parameter \(PTHT_{mb}(t)\)

Following are the WQ Module control file commands used to generate the above.

Simulation Class == DO
WQ dt == 900.0
WQ Units == mgL

Oxygen Model == O2
  Oxygen Min Max == 0.0, 12.0
  Oxygen Benthic == 4.7, 1.08
End Oxygen Model

Pathogen Model == Attached, Pth1
  Alive Min Max == 0.0, 1e7
  Mortality == 0.0008, 0.0, 6.1, 1.0, 1.14
  Visible Inactivation == 0.0, 0.0667, 0.1
  UVA Inactivation == 0.01, 0.00667, 0.1
  UVB Inactivation == 0.02, 0.00667, 0.1
  Settling == -0.001, -0.2
  Target Attached Fraction == 0.5
End Pathogen Model

Pathogen Model == Free, Pth2
  Alive Min Max == 0.0, 1e7
  Mortality == 0.08, 2e-12, 6.1, 1.0, 1.11
  Visible Inactivation == 0.082, 0.0067, 0.5
  UVA Inactivation == 0.5, 0.0067, 0.5
  UVB Inactivation == 1.0, 0.0067, 0.5
  Settling == -0.03
End Pathogen Model

Material == Default
  Oxygen Flux == -1400.0
End Material

Material == 1
  Oxygen Flux == -1100.0
End Material

Material == 2
  Oxygen Flux == -1200.0
End Material

Material == 3
  Oxygen Flux == -1300.0
End Material

1.5.2 Simulation class: Inorganics

The computed variables presented are:

• Dissolved oxygen
• Silicate
• Ammonium
• Nitrate
• FRP
• Adsorbed FRP
• Two phytoplankton groups (one each for the basic and advanced model)

Pathogen behaviour is unchanged from the DO simulation class mass balance model presented in Section 1.5.1 so the corresponding mass balance is omitted for clarity.

The initial conditions are:

• Dissolved oxygen: 8.0 mg/L
• Silicate: 50.0 mg/L
• Ammonium: 0.15 mg/L
• Nitrate: 0.2 mg/L
• FRP: 0.04 mg/L
• Adsorbed FRP: 0.02 mg/L
• Blue green phytoplankton: 2.0 \(\mu\)g/L (advanced model)
• Blue green internal nitrogen: 0.008 mg/L
• Blue green internal phosphorus: 0.0012 mg/L
• Green phytoplankton: 5.0 \(\mu\)g/L (basic model)

The relevant fluxes considered are:

• Dissolved oxygen
  • Sediment
  • Atmospheric (both source and sink)
  • Nitrification
  • Phytoplankton primary productivity
  • Phytoplankton respiration
• Silicate
  • Sediment
  • Phytoplankton primary productivity
  • Phytoplankton mortality
  • Phytoplankton excretion
• Ammonium
  • Sediment
  • Atmospheric (wet and dry deposition)
  • Nitrification
  • Anaerobic oxidation of ammonium
  • Dissimilatory reduction of nitrate to ammonium
  • Phytoplankton primary productivity
  • Phytoplankton mortality
  • Phytoplankton excretion
• Nitrate
  • Sediment
  • Atmospheric (wet and dry deposition)
  • Nitrification
  • Denitrification
  • Anaerobic oxidation of ammonium
  • Dissimilatory reduction of nitrate to ammonium
  • Phytoplankton primary productivity
• FRP
  • Sediment
  • Atmospheric
  • Adsorption and desorption
  • Phytoplankton primary productivity
  • Phytoplankton mortality
  • Phytoplankton excretion
• FRP Adsorbed
  • Adsorption and desorption
• Phytoplankton (both groups)
  • Phytoplankton primary productivity
  • Phytoplankton respiration
  • Phytoplankton mortality
  • Phytoplankton excretion
  • Phytoplankton sedimentation

The mass conservation performance of the WQ Module is presented in Figure 1.6, via \(DO_{mb}(t)\), \(Si_{mb}(t)\), \(Amm_{mb}(t)\), \(Nit_{mb}(t)\), \((FRP+FRPAds)_{mb}(t)\) and \(PHY_{mb}(t)\). Over the duration of the simulation, mass conservation holds to within approximately 0.014%. Relevant fluxes used to compute these mass conservations, as well as total nitrogen and total phosphorus mass conservations, are presented subsequently.

Figure 1.6: Inorganics mass conservation parameters \(DO_{mb}(t)\), \(Si_{mb}(t)\), \(Amm_{mb}(t)\), \(Nit_{mb}(t)\), \(FRP_{mb}(t)\) and \(PHY_{mb}(t)\)

Figure 1.7: Dissolved oxygen WQ Module fluxes \(F_i(t)\) used to compute \(DO_{mb}(t)\)

Figure 1.8: Silicate WQ Module fluxes \(F_i(t)\) used to compute \(Si_{mb}(t)\)

Figure 1.9: Ammonium WQ Module fluxes \(F_i(t)\) used to compute \(Amm_{mb}(t)\)

Ammonium anammox fluxes are zero in the dissolved oxygen conditions of this mass conservation model.

Figure 1.10: Nitrate WQ Module fluxes \(F_i(t)\) used to compute \(Nit_{mb}(t)\)

Nitrate anammox fluxes are zero in the dissolved oxygen conditions of this mass conservation model.

Figure 1.11: FRP + FRPAds WQ Module fluxes \(F_i(t)\) used to compute \((FRP+FRPAds)_{mb}(t)\)

Figure 1.12: Phytoplankton WQ Module fluxes \(F_i(t)\) used to compute \(PHY_{mb}(t)\)

Figure 1.13: Inorganics total nitrogen and total phosphorus mass conservation parameters \(TN_{mb}(t)\) and \(TP_{mb}(t)\)

Following are the WQ Module control file commands used to generate the above.

Simulation Class == Inorganics
WQ dt == 900.0
WQ Units == mgL

Oxygen Model == O2
  Oxygen Min Max == 0.0, 12.0
  Oxygen Benthic == 4.7, 1.08
End Oxygen Model

Silicate Model == Si
  Silicate Min Max == 0.0, 100.0
  Silicate Benthic == 4.2, 1.01
  Oxygen == ON
End Silicate Model

Inorganic Nitrogen Model == AmmoniumNitrate
  Ammonium Min Max == 0.0, 50.0
  Nitrate Min Max == 0.0, 50.0
  Ammonium Benthic == 4.05, 1.06
  Nitrate Benthic == 4.25, 1.10
  Nitrification == 0.05, 4.15, 1.01
  Deitrification == Michaelis Menten, 0.05, 4.01, 1.03
  Oxygen == ON
  Atmospheric Deposition == 5.0, 0.0, 0.5
  Anaerobic Oxidation of Ammonium == 0.005, 2.5, 2.5
  Diss Nitrate Reduction to Ammonium == 0.005, 5.0
End Inorganic Nitrogen Model

Inorganic Phosphorus Model == FRPhsAdss
  FRP Min Max == 0.0, 5.0
  FRP Ads Min Max == 0.0, 5.0
  FRP Benthic == 4.3, 1.095
  Oxygen == ON
  Atmospheric Deposition == 0.5, 0.0
  Adsorption == Linear, 0.25
  Settling == 0.000
End Inorganic Phosphorus Model

Phyto Model == Advanced, Bluegreen
  Min Max == 0.05, 50.0
  Temperature Limitation == Standard, 19.0, 22.0, 29.0
  Salinity Limitation == Mixed, 5.0, 10.0, 2.5
  Light Limitation == Chalker, 0.0005, 150.0
  Nitrogen Limitation == 0.005, 1.5, 3.0, 5.0
  Phosphorus Limitation == 0.002, 0.12, 0.3, 0.6
  Silicate Limitation == 0.005, 9.0
  Uptake == 2.5, 0.3, 8.0
  Primary Productivity == 3.4, 1.08
  Respiration == 0.06, 1.04, 0.2, 0.3, 0.1
  Carbon Chla Ratio == 26.8
  Nitrogen Fixing == 0.002, 0.3
  Settling == Constant, -0.3
End Phyto Model

Phyto Model == Basic, Green
  Min Max == 0.05, 50.0
  Temperature Limitation == Standard, 19.0, 22.0, 29.0
  Salinity Limitation == Fresh, 2.0, 5.0, 0.0
  Light Limitation == Steele, 0.0005, 150.0
  Nitrogen Limitation == 0.01, 2.5
  Phosphorus Limitation == 0.005, 0.05
  Silicate Limitation == 0.01, 4.0
  Uptake == 3.0, 0.6, 8.0
  Primary Productivity == 2.6, 1.1
  Respiration == 0.005, 1.1, 0.3, 0.4, 0.5
  Carbon Chla Ratio == 27.8
  Nitrogen Fixing == 0.001, 0.5
  Settling == Constant, -0.4
End Phyto Model

Pathogen Model == Attached, Pth1
  Alive Min Max == 0.0, 1e7
  Mortality == 0.0008, 0.0, 6.1, 1.0, 1.14
  Visible Inactivation == 0.0, 0.0667, 0.1
  UVA Inactivation == 0.01, 0.00667, 0.1
  UVB Inactivation == 0.02, 0.00667, 0.1
  Settling == -0.001, -0.2
  Target Attached Fraction == 0.5
End Pathogen Model

Pathogen Model == Free, Pth2
  Alive Min Max == 0.0, 1e7
  Mortality == 0.08, 2e-12, 6.1, 1.0, 1.11
  Visible Inactivation == 0.082, 0.0067, 0.5
  UVA Inactivation == 0.5, 0.0067, 0.5
  UVB Inactivation == 1.0, 0.0067, 0.5
  Settling == -0.03
End Pathogen Model

Material == Default
  Oxygen Flux == -1400.0
  Silicate Flux == 10.0
  Ammonium Flux == 20.0
  Nitrate Flux == 30.0
  FRP Flux == 5.0
End Material

Material == 1
  Oxygen Flux == -1100.0
  Silicate Flux == 11.0
  Ammonium Flux == 21.0
  Nitrate Flux == 31.0
  FRP Flux == 6.0
End Material

Material == 2
  Oxygen Flux == -1200.0
  Silicate Flux == 12.0
  Ammonium Flux == 22.0
  Nitrate Flux == 32.0
  FRP Flux == 7.0
End Material

Material == 3
  Oxygen Flux == -1300.0
  Silicate Flux == 13.0
  Ammonium Flux == 23.0
  Nitrate Flux == 33.0
  FRP Flux == 8.0
End Material

1.5.3 Simulation class: Organics

The computed variables presented are:

• Dissolved oxygen
• Silicate
• Ammonium
• Nitrate
• FRP
• Adsorbed FRP
• Particulate organic carbon
• Dissolved organic carbon
• Particulate organic nitrogen
• Dissolved organic nitrogen
• Particulate organic phosphorus
• Dissolved organic phosphorus
• Refractory particulate organic matter
• Refractory dissolved organic carbon
• Refractory dissolved organic nitrogen
• Refractory dissolved organic phosphorus
• Two phytoplankton groups (one each for the basic and advanced model)

Again, pathogen behaviour is unchanged from the DO simulation class mass balance model presented in Section 1.5.1 so the corresponding mass balance is omitted for clarity.

The initial conditions are:

• Dissolved oxygen: 8.0 mg/L
• Silicate: 1.0 mg/L
• Ammonium: 0.15 mg/L
• Nitrate: 0.2 mg/L
• FRP: 0.04 mg/L
• Adsorbed FRP: 0.02 mg/L
• Particulate organic carbon: 2.5 mg/L
• Dissolved organic carbon: 1.5 mg/L
• Particulate organic nitrogen: 0.3 mg/L
• Dissolved organic nitrogen: 0.1 mg/L
• Particulate organic phosphorus: 0.06 mg/L
• Dissolved organic phosphorus: 0.03 mg/L
• Refractory particulate organic matter: 2.1 mg/L
• Refractory dissolved organic carbon: 1.6 mg/L
• Refractory dissolved organic nitrogen: 0.6 mg/L
• Refractory dissolved organic phosphorus: 0.04 mg/L
• Blue green phytoplankton: 2.0 \(\mu\)g/L (advanced model)
• Blue green internal nitrogen: 0.008 mg/L
• Blue green internal phosphorus: 0.0012 mg/L
• Green phytoplankton: 5.0 \(\mu\)g/L (basic model)

The relevant fluxes considered are:

• Dissolved oxygen
  • Sediment
  • Atmospheric (both source and sink)
  • Nitrification
  • Dissolved organic carbon mineralisation (oxygen based)
  • Phytoplankton primary productivity
  • Phytoplankton respiration
• Silicate
  • Sediment
  • Phytoplankton primary productivity
  • Phytoplankton mortality
  • Phytoplankton excretion
• Ammonium
  • Sediment
  • Atmospheric (wet and dry deposition)
  • Nitrification
  • Anaerobic oxidation of ammonium
  • Dissimilatory reduction of nitrate to ammonium
  • Dissolved organic nitrogen mineralisation
  • Dissolved refractory organic matter photolysis
  • Phytoplankton primary productivity
• Nitrate
  • Sediment
  • Atmospheric (wet and dry deposition)
  • Nitrification
  • Denitrification
  • Anaerobic oxidation of ammonium
  • Dissimilatory reduction of nitrate to ammonium
  • Dissolved organic carbon mineralisation (nitrate based)
  • Phytoplankton primary productivity flux
• FRP
  • Sediment
  • Atmospheric
  • Adsorption and desorption
  • Dissolved organic phosphorus mineralisation
  • Dissolved refractory organic matter photolysis
  • Phytoplankton primary productivity
• FRP Adsorbed
  • Adsorption and desorption
• Particulate organic carbon, nitrogen and phosphorus
  • Hydrolysis
  • Breakdown of refractory particulate organic matter
  • Phytoplankton mortality
• Dissolved organic carbon, nitrogen and phosphorus
  • Sediment
  • Hydrolysis
  • Mineralisation
  • Dissolved refractory organic matter photolysis
  • Dissolved refractory organic matter activation
  • Phytoplankton excretion
• Refractory particulate organic matter
  • Breakdown
• Refractory organic carbon, nitrogen and phosphorus
  • Dissolved refractory organic matter photolysis
  • Dissolved refractory organic matter activation
• Phytoplankton (both groups)
  • Phytoplankton primary productivity
  • Phytoplankton respiration
  • Phytoplankton mortality
  • Phytoplankton excretion
  • Phytoplankton sedimentation

The mass conservation performance of the WQ Module is presented in Figure 1.14, via \(DO_{mb}(t)\), \(Si_{mb}(t)\), \(Amm_{mb}(t)\), \(Nit_{mb}(t)\), \((FRP+FRPAds)_{mb}(t)\), \(POC_{mb}(t)\), \(DOC_{mb}(t)\), \(PON_{mb}(t)\), \(DON_{mb}(t)\), \(POP_{mb}(t)\), \(DOP_{mb}(t)\), \(RPOM_{mb}(t)\), \(RDOC_{mb}(t)\), \(RDON_{mb}(t)\), \(RDOP_{mb}(t)\) and \(PHY_{mb}(t)\). Over the duration of the simulation, mass conservation holds to within 0.024%. Relevant fluxes used to compute these mass conservations, as well as total nitrogen and total phosphorus mass conservations, are presented subsequently.

Figure 1.14: Organics mass conservation parameters \(DO_{mb}(t)\), \(Si_{mb}(t)\), \(Amm_{mb}(t)\), \(Nit_{mb}(t)\), \(FRP_{mb}(t)\), \(POC_{mb}(t)\), \(DOC_{mb}(t)\), \(PON_{mb}(t)\), \(DON_{mb}(t)\), \(POP_{mb}(t)\), \(DOP_{mb}(t)\), \(RPOM_{mb}(t)\), \(RDOC_{mb}(t)\), \(RDON_{mb}(t)\), \(RDOP_{mb}(t)\) and \(PHY_{mb}(t)\)

Figure 1.15: Dissolved oxygen WQ Module fluxes \(F_i(t)\) used to compute \(DO_{mb}(t)\)

Figure 1.16: Silicate WQ Module fluxes \(F_i(t)\) used to compute \(Si_{mb}(t)\)

Figure 1.17: Ammonium WQ Module fluxes \(F_i(t)\) used to compute \(Amm_{mb}(t)\)

Ammonium anammox fluxes are zero in the dissolved oxygen conditions of this mass conservation model.

Figure 1.18: Nitrate WQ Module fluxes \(F_i(t)\) used to compute \(Nit_{mb}(t)\)

Nitrate anammox fluxes are zero in the dissolved oxygen conditions of this mass conservation model.

Figure 1.19: FRP+FRPAds WQ Module fluxes \(F_i(t)\) used to compute \((FRP+FRPAds)_{mb}(t)\)

Figure 1.20: POC WQ Module fluxes \(F_i(t)\) used to compute \(POC_{mb}(t)\)

Figure 1.21: DOC WQ Module fluxes \(F_i(t)\) used to compute \(DOC_{mb}(t)\)

Figure 1.22: PON WQ Module fluxes \(F_i(t)\) used to compute \(PON_{mb}(t)\)

Figure 1.23: DON WQ Module fluxes \(F_i(t)\) used to compute \(DON_{mb}(t)\)

Figure 1.24: POP WQ Module fluxes \(F_i(t)\) used to compute \(POP_{mb}(t)\)

Figure 1.25: DOP WQ Module fluxes \(F_i(t)\) used to compute \(DOP_{mb}(t)\)

Figure 1.26: RPOM WQ Module fluxes \(F_i(t)\) used to compute \(RPOM_{mb}(t)\)

Figure 1.27: RDOC WQ Module fluxes \(F_i(t)\) used to compute \(RDOC_{mb}(t)\)

Figure 1.28: RDON WQ Module fluxes \(F_i(t)\) used to compute \(RDON_{mb}(t)\)

Figure 1.29: RDOP WQ Module fluxes \(F_i(t)\) used to compute \(RDOP_{mb}(t)\)

Figure 1.30: Phytoplankton WQ Module fluxes \(F_i(t)\) used to compute \(PHY_{mb}(t)\)

Figure 1.31: Organics total nitrogen and total phosphorus mass conservation parameters \(TN_{mb}(t)\) and \(TP_{mb}(t)\)

Following are the WQ Module control file commands used to generate the above.

Simulation Class == Organics
WQ dt == 900.0
WQ Units == mgL

Oxygen Model == O2
  Oxygen Min Max == 0.0, 12.0
  Oxygen Benthic == 4.7, 1.08
End Oxygen Model

Silicate Model == Si
  Silicate Min Max == 0.0, 100.0
  Silicate Benthic == 4.2, 1.01
  Oxygen == ON
End Silicate Model

Inorganic Nitrogen Model == AmmoniumNitrate
  Ammonium Min Max == 0.0, 50.0
  Nitrate Min Max == 0.0, 50.0
  Ammonium Benthic == 4.05, 1.06
  Nitrate Benthic == 4.25, 1.10
  Nitrification == 0.05, 4.15, 1.01
  Denitrification == Michaelis Menten, 0.05, 4.01, 1.03
  Oxygen == ON
  Atmospheric Deposition == 5.0, 0.0, 0.5
  Anaerobic Oxidation of Ammonium == 0.005, 2.5, 2.5
  Diss Nitrate Reduction to Ammonium == 0.005, 5.0
End Inorganic Nitrogen Model

Inorganic Phosphorus Model == FRPhsAds
  FRP Min Max == 0.0, 5.0
  FRP Ads Min Max == 0.0, 5.0
  FRP Benthic == 4.3, 1.095
  Oxygen == ON
  Atmospheric Deposition == 0.5, 0.0
  Adsorption == Linear, 0.25
  Settling == 0.000
End Inorganic Phosphorus Model

Phyto Model == Advanced, Bluegreen
  Min Max == 0.05, 50.0
  Temperature Limitation == Standard, 19.0, 22.0, 29.0
  Salinity Limitation == Mixed, 5.0, 10.0, 2.5
  Light Limitation == Chalker, 0.0005, 150.0
  Nitrogen Limitation == 0.005, 1.5, 3.0, 5.0
  Phosphorus Limitation == 0.002, 0.12, 0.3, 0.6
  Silicate Limitation == 0.005, 9.0
  Uptake == 2.5, 0.3, 8.0
  Primary Productivity == 3.4, 1.08
  Respiration == 0.06, 1.04, 0.2, 0.3, 0.1
  Carbon Chla Ratio == 26.8
  Nitrogen Fixing == 0.002, 0.3
  Settling == Constant, -0.3
End Phyto Model

Phyto Model == Basic, Green
  Min Max == 0.05, 50.0
  Temperature Limitation == Standard, 19.0, 22.0, 29.0
  Salinity Limitation == Fresh, 2.0, 5.0, 0.0
  Light Limitation == Steele, 0.0005, 150.0
  Nitrogen Limitation == 0.01, 2.5
  Phosphorus Limitation == 0.005, 0.05
  Silicate Limitation == 0.01, 4.0
  Uptake == 3.0, 0.6, 8.0
  Primary Productivity == 2.6, 1.1
  Respiration == 0.005, 1.1, 0.3, 0.4, 0.5
  Carbon Chla Ratio == 27.8
  Nitrogen Fixing == 0.001, 0.5
  Settling == Constant, -0.4
End Phyto Model

Organic Matter Model == Refractory
  Carbon Min Max == 0.0, 10.0, 0.0, 10.0
  Nitrogen Min Max == 0.0, 10.0, 0.0, 10.0
  Phosphorus Min Max == 0.0, 9.0, 0.0, 9.0
  Organics Benthic == 1.0, 1.08
  Hydrolysis == 0.05, 0.007, 0.0004, 1.0, 1.05
  Mineralisation == 0.01, 1.2, 1.03, 0.5, 0.5
  Self Shading == 0.0, 0.0
  Settling == Stokes, 0.00000035, 2450.8
  Ref Carbon Min Max == 0.0, 10.0, 0.0, 10.0
  Ref Nitrogen Min Max == 0.0, 10.0
  Ref Phosphorus Min Max == 0.0, 9.0
  Ref Breakdown == 0.001, 0.1, 0.01
  Ref Activation == 0.01
  Ref Photolysis == 0.5
  Ref Self Shading == 0.0, 0.0
  Ref Settling == Stokes, 0.00000045, 2450.8
End Organic Matter Model

Pathogen Model == Attached, Pth1
  Alive Min Max == 0.0, 1e7
  Mortality == 0.0008, 0.0, 6.1, 1.0, 1.14
  Visible Inactivation == 0.0, 0.0667, 0.1
  UVA Inactivation == 0.01, 0.00667, 0.1
  UVB Inactivation == 0.02, 0.00667, 0.1
  Settling == -0.001, -0.2
  Target Attached Fraction == 0.5
End Pathogen Model

Pathogen Model == Free, Pth2
  Alive Min Max == 0.0, 1e7
  Mortality == 0.08, 2e-12, 6.1, 1.0, 1.11
  Visible Inactivation == 0.082, 0.0067, 0.5
  UVA Inactivation == 0.5, 0.0067, 0.5
  UVB Inactivation == 1.0, 0.0067, 0.5
  Settling == -0.03
End Pathogen Model

Material == Default
  Oxygen Flux == -1400.0
  Silicate Flux == 10.0
  Ammonium Flux == 20.0
  Nitrate Flux == 30.0
  FRP Flux == 5.0
  DOC Flux == 20.0
  DON Flux == 10.0
  DOP Flux == 5.0
End Material

Material == 1
  Oxygen Flux == -1100.0
  Silicate Flux == 11.0
  Ammonium Flux == 21.0
  Nitrate Flux == 31.0
  FRP Flux == 6.0
  DOC Flux == 19.0
  DON Flux == 9.0
  DOP Flux == 4.0
End Material

Material == 2
  Oxygen Flux == -1200.0
  Silicate Flux == 12.0
  Ammonium Flux == 22.0
  Nitrate Flux == 32.0
  FRP Flux == 7.0
  DOC Flux == 18.0
  DON Flux == 8.0
  DOP Flux == 3.0
End Material

Material == 3
  Oxygen Flux == -1300.0
  Silicate Flux == 13.0
  Ammonium Flux == 23.0
  Nitrate Flux == 33.0
  FRP Flux == 8.0
  DOC Flux == 17.0
  DON Flux == 7.0
  DOP Flux == 2.0
End Material